But the severity of Ebola's symptoms of the disease, which has killed 90% of those it has infected in past outbreaks, mean those fearing they will soon be walking through an abandoned, desolate London, 28 Days Later-style, can breathe easy - especially given infected people only become contagious when the symptoms start to show.

Checking for Ebola symptoms: A teacher uses a thermometer to take a students temperature at a primary school in Lagos, Nigeria